Water heater



Miam-20,1923.

E. CARR MTER HEATER Filed July 23. 1925 Patented Nev. 2G, lS'ZB.

' MENTE@ EDVIARD CARR, OF AUCKLAND, NEW ZEALAN), ASSIGNGR OFNINE-SIXTEENTHS TO i HARRY DELAIJIERE DANSEY, 0F AUCKLAND, NEW ZEALAND.

waren HEATER.

Application filed July 23,

To all 't0/wm t may concer/a.'

Be it known that I, EDWARD Cana, sulr iect of the King ot' GreatBritain. residing at East Coast Road, Milford, Auckland, Dominion of NewZealand, have invented a new and useful later Heater, ot which thefollowing is a speciication.

This invention relates t0 a water heater of the type in which theheating agency for the water consists in a circulatory system, such as apipe circuit connected with a water chamber and passing through aheating zone of any of the known and approved classes generally used inthese systems, as

for instance, around the burners of a gas stove, through the oven ofsuch a stove, or through electrically heated appliances.

The invention consists in a special construction of'appliance by which atank is formed having aheating chamber within its bottom, and a'supplychamber in its top, divided o from one another by an insulating airspace or chamber, such heating chamber being supplied from the supplychamber as water is drawn oft from it, so that it always remains full.The supply chamber may itself be kept full by any of the automatic meanswell known in the art, or may be charged by hand from time to time, asrequired.

The heating chamber is provided with a draw off tap leading from nearits top and is connected up with the circulating pipe system in theusual way.

This construction is shown in the accompanying drawing, which is ageneral sectional elevation of the whole heater.

As illustrated, the heater is formed by a single structure of a )provedsize and shape, but preferably of t e cylindrical urn like form shown.This is divided ott in its height to form a large upper chamber A and asmaller lower chamber B at the bottom, and an intermediate air sealedchamber (l of relatively small area.

The upper chamber A is connected with the lower chamber B by means of apipe D internally disposed and extending through from the bottom of thechamber A to near the bottom ot the chamber B. The lower chamber isprovided with a draw ott tap E opening from it at a. point near its top.

Consequently when the supply chamber A 1923. Serial N0. 653,345.

is charged with water, the chamber B `will he lilled through theconnection D and will be always kept full, as the withdrawal ot waterthrough the tap E, will result in water from the chamber replacing thatdrawn ott.

The chamber A is connected up by the pipes F with the circulatingheating unit of whatever class employed, such pipes being disposed toextend from the bottom and pass into the top ot such chamber in the wellknown convection system, so that the water in this chamber is heatedthereby and may be drawn off from the top as required. The air space Cthen acts as an insulating space to protect the hot water in the chamberB at its hottest zone from loss of heat by radiation and through actualcontact with the cold water in the bottom of the supply chamber A. o Thesupply chamber A is provided with a removable top cover A to allow forit being filled by hand, as required. Or it may be connected to astorage tank through a coin nection H and the supply automaticallymaintained by any of the automatic controls employed in the art.

A vent pipe G is provided to extend up from the top of the chamber B,through the chamber to above the water level therein. This will allowfor the escape of any steam generated in the heating chamber and for theovertlow of any ebullition oi water, into the said chamber a.

I claim A water heater formed by a vessel divided oft to provide asupply chamber in the top, a heating chamber in the bottom, and an airchamber situated between them, such heating chamber being connected to awater heating circulatory system, a pipe connection extending from thebottom oit the supply chamber to near the botom ot the heating chamber,and a draw otl:1 tap opening from the top of the heatingchamber,substantially as specified.

Tn testimony whereot, I atlizi my signature.

EDl/JARD CARR.

Witnesses DAVID BROWN Herron, WILLIAM ERNEST HUGHES.

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